Documentation

Overview

    Package slicetype implements data types and utilities to describe Bigslice types: Slices, Frames, and Tasks all carry slicetype.Types.

    Index

    Constants

    This section is empty.

    Variables

    This section is empty.

    Functions

    func Assignable

    func Assignable(in, out Type) bool

      Assignable reports whether column type in can be assigned to out.

      func Columns

      func Columns(typ Type) []reflect.Type

        Columns returns a slice of column types from the provided type.

        func Signature

        func Signature(arg, ret Type) string

          Signature returns a Go function signature for a function that takes the provided arguments and returns the provided values.

          func String

          func String(typ Type) string

          Types

          type Type

          type Type interface {
          	// NumOut returns the number of columns.
          	NumOut() int
          	// Out returns the data type of the ith column.
          	Out(i int) reflect.Type
          	// Prefix returns the number of columns in the type
          	// which are considered the type's prefix. A type's
          	// prefix is the set of columns which are considered
          	// the type's key columns for operations like reduce.
          	Prefix() int
          }

            A Type is the type of a set of columns.

            func Append

            func Append(t1, t2 Type) Type

            func Concat

            func Concat(types ...Type) Type

            func New

            func New(types ...reflect.Type) Type

              New returns a new Type using the provided column types.

              func Slice

              func Slice(t Type, i, j int) Type

              Notes

              Bugs

                • prefixes are lost when slicing a type.

                Source Files